Apps similar to Serial to Ethernet Connector include Null-modem emulator, which is free and open source. Other options are TCP/Com, Network Serial Ports, Remote Serial Ports and HW Virtual Serial Port. In total there are six apps like Serial to Ethernet Connector for Windows.
The Null-modem emulator (com0com) is a kernel-mode virtual serial port driver for Windows. You can create an unlimited number of virtual COM port pairs and use any pair to connect one COM port based application to another.
Multifunction serial to ethernet (and ethernet to serial) interface software. Easily access a serial device via a TCP/IP or UDP network or redirect Ethernet/IP data to real or “Virtual” RS232 serial ports.
Redirect serial data over a Tcp/Ip network, use Telnet Com Port Control (RFC 2217)
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Share & access remote COM ports and serial devices over Internet or local network
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HW VSP is a software driver that adds a virtual serial port (e.g. COM5) to the operating system and redirects the data from this port via a TCP/IP network to another hardware interface, which is specified by its IP address and port number.
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